d3.js - Updating graph as I drag a point around -

-

i making line of best fit app using d3 in want line of best fit update drag points around. got work when drag ends, line updates itself. however, when comes updating point being dragged, unable so.

here drag function:

 var move =  d3.behavior.drag()                 .on("drag",drag)                 .on("dragend",function(){                     dict.length = 0;                     var dragpoint = d3.select(this);                     var newx = x_scale2(parseint(dragpoint.attr("cx")));                     var newy = y_scale2(parseint(dragpoint.attr("cy")));                      model.replace_point(dragpoint.attr("id"),newx,newy);                     updatedisplay();               });    function drag(){       var dragpoint = d3.select(this);       dragpoint     .attr("cx",function(){return d3.event.dx + parseint(dragpoint.attr("cx"));})     .attr("cy",function(){return d3.event.dy +parseint(dragpoint.attr("cy"));})         }

** on how accomplish goal appreciated **

you can include 'update-code' in drag function.
line update every time drag event fired. means every time position of point changes.

var move = d3.behavior.drag()     .on("drag", drag);  function drag() {     var dragpoint = d3.select(this);     dragpoint         .attr("cx", d3.event.dx + parseint(dragpoint.attr("cx")))         .attr("cy", d3.event.dy + parseint(dragpoint.attr("cy")));     var newx = x_scale2(parseint(dragpoint.attr("cx")));     var newy = y_scale2(parseint(dragpoint.attr("cy")));     model.replace_point(dragpoint.attr("id"), newx, newy);     updatedisplay(); }

Comments

Post a Comment

Popular posts from this blog

html5 - What is breaking my page when printing? -

-
Image
i have questioner , don't know why when printing it's creating break before first question. live demo (link) i able resolve issue removing fieldset container had wrapped in.. having fieldset element causing of fields grouped together, , since not fit on first page, being pushed second page. removing fieldset element, able firefox print first 2 questions on page 1 identically chrome. it seems not new problem firefox , fieldset not playing nice found old bugzilla ticket 2008 has persisted , still being commented on in 2014 (link) if retaining fieldset important, found solution else came here (link) <script type='text/javascript'> $(window).bind('beforeprint', function(){ $('fieldset').each( function(item) { $(this).replacewith($('<div class="fieldset">' + this.innerhtml + '</div>')); } ) }); $(window).bind(
Read more

c# - must be a non-abstract type with a public parameterless constructor in redis -

-
when save object, got below error must non-abstract type public parameterless constructor in order use parameter 't' in generic type or method 'servicestack.redis.redisclient.store<t>(t) redisclass.getinstnace().store(msg); // error here redisclass.getinstnace().save(); as third party's class, can not edit how save object? could create wrapper around third party object call constructor, store wrapper? e.g. public class mywrapper { public thirdpartyobject thirdpartyinstance { get; set; } public mywrapper() { thirdpartyinstance = new thirdpartyobject("constructors"); } }
Read more

ajax - PHP/JSON Login script (Twitter style) not setting sessions -

-
i'm having trouble getting twitter style login work properly, reason gets stuck at session_register("useremail"); session_register("userpass"); and doesn't redirect after it. if enter wrong account data, works , appropriate error message pops up. this full code: <?php if(empty($_post['email']) || empty($_post['password'])) { die(msg(0,"all fields required")); } if(!(preg_match("/^[\.a-z0-9_\-\+]+[@][a-z0-9_\-]+([.][a-z0-9_\-]+)+[a-z]{1,4}$/", $_post['email']))) die(msg(0,"you haven't provided valid e-mail")); $host="localhost"; $username="root"; $password="x"; $db_name="x"; $tbl_name="x"; mysql_connect("$host", "$username", "$password")or die("cannot connect"); mysql_select_db("$db_name")or die("cannot select db"); $useremail=$_post['email']; $userpass=
Read more